D'Addazio Gianmaria, Sinjari Bruna, Arcuri Lorenzo, Femminella Beatrice, Murmura Giovanna, Santilli Manlio, Caputi Sergio
Department of Innovative Technologies in Medicine and Dentistry, University "G. d'Annunzio" of Chieti-Pescara, 66100 Chieti, Italy.
Department of Oral and Maxillo-Facial Sciences, "Sapienza", University of Rome, 00185 Rome, Italy.
Materials (Basel). 2021 Mar 22;14(6):1555. doi: 10.3390/ma14061555.
Implant abutment connection was described among the main causes of peri-implant bone resorption. The aim of this in vitro study was to test the coupling capacity, the surface modification of a new hybrid connection and the influence of repeated connection activations caused during the main clinical and laboratory phases. A total of 40 implant-abutment screw retained systems with 10°-conical and internal hexagon connection were tested. The connection was screwed, fixed to the universal test machine, removed the screw and a pull-out test was performed. Test was repeated five times in succession. Also Scanning Electron Microscopy (SEM) was used to detect microscopically surface modification. Analysis of variance and Tukey tests were used for the statistical analysis. Pull-out test reveals a mean value of 131.35 ± 16.52 Newton Centimeter (N·cm). For each single activation, results from first to fifth were: 113.9 ± 13.02, 126.1 ± 12.81, 138.11 ± 15.15, 138.8 ± 11.90 and 140 ± 12.99 N·cm. A statistically significant difference between the measurements and an increase in the removal force was shown. The collected data supports the use of this new type of connection, resulting in a very strong interface between implant and abutment. Also, repeated activation of connection can promote a better coupling of the implant-abutment interface.
种植体基台连接被认为是种植体周围骨吸收的主要原因之一。本体外研究的目的是测试一种新型混合连接的耦合能力、表面改性以及在主要临床和实验室阶段反复连接激活的影响。共测试了40个采用10°锥形和内六角连接的种植体-基台螺丝固位系统。将连接拧紧，固定到万能试验机上，拧下螺丝并进行拔出试验。试验连续重复五次。还使用扫描电子显微镜（SEM）在微观层面检测表面改性。采用方差分析和Tukey检验进行统计分析。拔出试验显示平均值为131.35±16.52牛顿厘米（N·cm）。对于每次单独激活，第一次到第五次的结果分别为：113.9±13.02、126.1±12.81、138.11±15.15、138.8±11.90和140±12.99 N·cm。测量结果之间显示出统计学上的显著差异，且拔出力有所增加。收集的数据支持使用这种新型连接，从而在种植体和基台之间形成非常牢固的界面。此外，连接的反复激活可促进种植体-基台界面更好地耦合。
